find S10 if a= 6 and d= 2
Answers
Answered by
10
We know that Sn = n/2 (2a + (n – 1) d)
= 10/2 * (2a + (10-1) * d)
= 5(12 + 18)
= 5(30)
= 150
= 10/2 * (2a + (10-1) * d)
= 5(12 + 18)
= 5(30)
= 150
Similar questions